Update dockerfile

dockerfile

@@ -1,30 +1,16 @@
-# Use an official lightweight Python image
-FROM python:3.10-slim
+# Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
+# you will also find guides on how best to write your Dockerfile
 
-# Set environment variables
-ENV PYTHONDONTWRITEBYTECODE=1
-ENV PYTHONUNBUFFERED=1
+FROM python:3.9
 
-# Set working directory
-WORKDIR /app
-
-# Install system dependencies (optional, add more if needed)
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential \
-    git \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy requirements file if it exists
-COPY requirements.txt .
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
 
-# Install Python dependencies
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy app files
-COPY . .
+WORKDIR /app
 
-# Expose the port that HF Spaces expects (default 7860 for Gradio, Streamlit, etc.)
-EXPOSE 7860
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Command to run the app
-CMD ["python", "app.py"]
+COPY --chown=user . /app
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]